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Question

Choose the wrongly matched pair regarding the position of reproductive structures in earthworm.

A
Testes 10th and 11th segments
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B
Spermathecae 6th to 9th segments
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C
Male genital pore 9th segment
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D
Female genital pore 14th segment
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E
Ovaries intersegmental septum of 12th and 13th segment
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Solution

The correct option is C Male genital pore 9th segment

1. Testes are in two pairs, white and lobed, located in the 10th and 11th segments.

2. Spermathecae are in four pairs in each of the 6th, 7th, 8th, 9th segment. They store spermatozoa during copulation.

3. The male genital pore is found in one pair located in the 18th segment. Sperm produced in the testes is pass out through male genital pore.

4. Female genital pores lie on the ventral surface of segment 14. So, the correct option will be 'Male genital pore - 9th segment'.

5. One pair of ovaries is attached at the inter-segmental septum of the 12th and 13th segments.

The correct option is C.


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